Answer to Question #195541 in Classical Mechanics for aishwarya nair

Question

If car A is at 40 km/h and car B is at 10 km/h in the opposite direction, what is the velocity of the car A relative to the car B

Answer 1

The velocity of the car A relative to the car B is

$$v_{AB}=v_A+v_B=40+10=50\text{ km/h}$$

if A and B mowe away from each other.